A touch component and a touch display device are provided. At least one of a first electrode or a second electrode is provided with a hollow portion, thereby reducing a parasitic capacitance formed between at least one of the first electrode or the second electrode and a cathode of an organic light emitting diode array layer.
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2. The touch component as claimed in claim 1, wherein the first branch electrode is provided with the hollow portion, and the second branch electrode is provided with the hollow portion.
3. The touch component as claimed in claim 1, wherein the touch unit further comprises a floating electrode, a portion of the floating electrode is disposed between the first branch electrode and the second branch electrode adjacent to the first branch electrode, the floating electrode is electrically insulated from the first branch electrode, and the floating electrode is electrically insulated from the second branch electrode.
5. The touch component as claimed in claim 1, wherein one of the first trunk electrode or the second trunk electrode comprises a trunk non-widening portion and a trunk widening portion connected to the trunk non-widening portion, a width of the trunk widening portion is greater than a width of the trunk non-widening portion, and the trunk widening portion is provided near an intersection of the first trunk electrode and the second trunk electrode.
6. The touch component as claimed in claim 1, wherein the touch unit further comprises a plurality of floating electrodes, the plurality of floating electrodes are electrically insulated from the first electrode and the second electrode, and a portion of the floating electrodes is disposed in the hollow portion.
7. The touch component as claimed in claim 6, wherein a portion of the floating electrodes is disposed between the first electrode and the second electrode.
8. The touch component as claimed in claim 6, wherein in each of the touch units, a percentage of a ratio of an area of the floating electrode to an area of the touch unit is greater than or equal to 30% and less than or equal to 90%.
9. The touch component as claimed in claim 1, wherein in each of the touch units, an absolute value of a difference between a percentage of a ratio of an area of the first electrode to an area of the touch unit and a percentage of a ratio of an area of the second electrode to an area of the touch unit is less than a preset percentage.
This invention relates to touch-sensitive components, specifically addressing the challenge of achieving uniform touch sensitivity across a touch-sensitive surface. The invention involves a touch component comprising multiple touch units, each containing at least two electrodes. The electrodes are designed to detect touch inputs by measuring changes in capacitance or other electrical properties when a user interacts with the surface. The key innovation lies in the geometric arrangement of the electrodes within each touch unit to ensure consistent touch response. Specifically, the area ratio of the first electrode to the touch unit and the area ratio of the second electrode to the touch unit are balanced such that the absolute difference between their respective percentages is below a predefined threshold. This balance ensures that the touch sensitivity remains uniform across the entire touch surface, preventing variations in detection accuracy due to uneven electrode distribution. The invention is particularly useful in applications requiring high-precision touch input, such as touchscreens for mobile devices, industrial control panels, or medical equipment. By optimizing electrode placement, the invention improves reliability and user experience in touch-sensitive interfaces.
10. The touch component as claimed in claim 9, wherein in each of the touch units, the area of the first electrode is equal to the area of the second electrode.
11. The touch component as claimed in claim 1, wherein the first electrode and the second electrode are located on a same conductive layer, the first electrode in each of the touch units is electrically connected by a bridge wire, and the second electrode in each of the touch units is continuously formed.
A touch component for capacitive touch sensing includes a substrate with multiple touch units arranged in an array. Each touch unit contains a first electrode and a second electrode, which are positioned on the same conductive layer. The first electrodes in adjacent touch units are electrically connected by bridge wires, while the second electrodes in each touch unit are formed as a continuous conductive structure without interruptions. This design allows for efficient signal routing and touch detection by ensuring that the first electrodes are interconnected while maintaining the integrity of the second electrode's continuous conductive path. The touch component is designed to improve signal transmission and reduce interference in capacitive touch panels, enhancing touch sensitivity and accuracy. The continuous second electrode structure simplifies manufacturing by eliminating the need for separate connections between adjacent touch units, while the bridge wires ensure proper electrical continuity for the first electrodes. This configuration is particularly useful in applications requiring high-resolution touch sensing, such as smartphones, tablets, and other interactive displays.
15. The touch display device as claimed in claim 13, wherein the touch layer further comprises a plurality of floating electrodes, a portion of the floating electrodes is disposed between the first electrode and the second electrode, a number of the sub-pixels surrounded by the floating electrodes disposed between the first electrode and the second electrode in a width direction of the floating electrodes is less than or equal to 4 and greater than 0, and the floating electrodes are composed of a metal grid.
16. The touch display device as claimed in claim 13, wherein the display panel comprises an organic light emitting diode array layer and a packaging layer, and the packaging layer is located between the organic light emitting diode array layer and the touch component.
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July 29, 2020
November 15, 2022
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